JPS63100962U

JPS63100962U -

Info

Publication number: JPS63100962U
Application number: JP19707686U
Authority: JP
Priority date: 1986-12-22
Filing date: 1986-12-22
Publication date: 1988-06-30

Description

[Brief explanation of the drawing]

第１図は本考案第１実施例のリニヤードモータ
の縦断面図、第２図は電機子コイル群からなるス
テータ電機子の斜視図、第３図は界磁マグネツト
の斜視図、第４図は界磁マグネツトとステータ電
機子との展開図、第５図は界磁マグネツトの磁束
密度波形図、第６図は磁気エンコーダ磁束密度波
形の説明図、第７図は本考案第２実施例を示す界
磁マグネツトの斜視図、第８図は同実施例に基ず
いたステータ電機子の斜視図である。符号の説明、１……リニヤードモータ、２……
外筒、３……空隙、４……内筒、５，６……蓋、
７，８……軸受、９……シヤフト、１０，…，１
３……螺刻部、１４，１５……鍔、１６……ステ
ータヨーク、１７―１，…，１７―３，１７′―
１，…，１７′―６……電機子コイル、１７ａ，
１７ｂ，１７′ａ，１７′ｂ……発生トルクに寄
与する有効導体部、１７ｃ，１７ｄ，１７′ｃ，
１７′ｄ……発生トルクに寄与しない導体部、１
８，１８′……ステータ電機子、１９……プリン
ト配線基板、２０……永久磁石、２１，２１―１
，…，２１―３……位置検知素子、２２……枠内
空胴部、２３……ムービングヨーク、２４，２４
′……界磁マグネツト、２４―１，…，２４―４
，２４′―１，…，２４′―８……メイン磁極、
２５，２５′……磁気エンコーダ磁極、２６……
Ｎ極磁極部、２７……Ｎ′極磁極部、２８……Ｓ
極磁極部、２９……Ｓ′極磁極部、３０，…，３
４……磁束密度波形、３５……電子転流回路、３
６……正側電源端子、３７……負側電源端子、３
８，３９，４０……点線囲い部、４１，４２……
磁気センサ、４４……永久磁石、４５……周波数
。 Fig. 1 is a longitudinal cross-sectional view of a linear motor according to the first embodiment of the present invention, Fig. 2 is a perspective view of a stator armature consisting of a group of armature coils, Fig. 3 is a perspective view of a field magnet, and Fig. 4 is a developed view of the field magnet and stator armature, FIG. 5 is a magnetic flux density waveform diagram of the field magnet, FIG. 6 is an explanatory diagram of the magnetic encoder magnetic flux density waveform, and FIG. 7 is a diagram showing the second embodiment of the present invention. FIG. 8 is a perspective view of a stator armature based on the same embodiment. Explanation of symbols, 1... Linyard motor, 2...
Outer cylinder, 3...Gap, 4...Inner cylinder, 5, 6...Lid,
7, 8...Bearing, 9...Shaft, 10,...,1
3... Threaded part, 14, 15... Tsuba, 16... Stator yoke, 17-1,..., 17-3, 17'-
1,...,17'-6...armature coil, 17a,
17b, 17'a, 17'b... Effective conductor portion contributing to generated torque, 17c, 17d, 17'c,
17'd...Conductor portion that does not contribute to generated torque, 1
8, 18'... Stator armature, 19... Printed wiring board, 20... Permanent magnet, 21, 21-1
, ..., 21-3...position detection element, 22...frame cavity, 23...moving yoke, 24, 24
'...Field magnet, 24-1,...,24-4
, 24'-1, ..., 24'-8... Main magnetic pole,
25, 25'...Magnetic encoder magnetic pole, 26...
N pole magnetic pole part, 27...N' magnetic pole part, 28...S
Polar magnetic pole part, 29...S' polar magnetic pole part, 30,...,3
4...Magnetic flux density waveform, 35...Electronic commutation circuit, 3
6...Positive side power supply terminal, 37...Negative side power supply terminal, 3
8, 39, 40... Dotted line enclosure, 41, 42...
Magnetic sensor, 44...Permanent magnet, 45...Frequency.

補正昭６２．４．２７図面の簡単な説明を次のように補正する。明細書第１８頁第１行乃至第２行「，第８図は
・・・斜視図」を削除する。Amendment April 27, 1982 The brief description of the drawing is amended as follows. The lines 1 and 2 of page 18 of the specification, ``, Figure 8 is a perspective view'' are deleted.

Claims

[Claims for Utility Model Registration] (1) An outer cylinder and an inner cylinder, one of which is a stator and the other is a mover so that relative rotation and relative axial movement are possible through a gap between them. A stator armature that generates rotational torque is provided on the stator surface where the inner cylinder and the outer cylinder face each other, and a N-pole and a S-pole are driven along the circumferential direction on the movable surface facing the stator armature. A field magnet having a plurality of magnetic poles for driving is provided, and magnetic poles of substantially N and S poles are alternately formed at fine pitches along the circumferential direction of the driving magnetic pole of the field magnet. A linear motor with a built-in magnetic encoder, comprising a magnetic encoder magnetic pole formed therein, and a magnetic sensor for detecting the magnetic encoder magnetic pole arranged on a stator armature surface facing the magnetic encoder magnetic pole. (2) The above magnetic encoder magnetic pole has a strongly magnetized N pole and a weakly magnetized N' pole alternately magnetized at a fine pitch for the drive N pole, and the drive S pole has a strongly magnetized N pole and a weakly magnetized N' pole. A linear motor with a built-in magnetic encoder as set forth in claim (1) of the registered utility model, wherein strongly magnetized S poles and weakly magnetized S' poles are alternately magnetized at fine pitches. (3) The above-mentioned magnetic encoder magnetic poles are made by forming in advance irregularities extending in the axial direction at fine pitches along the circumferential direction on the material forming the field magnet, and magnetizing the N and S poles for driving. A linear motor with a built-in magnetic encoder as set forth in claim (1) of the registered utility model, which is formed by: